Key Terms

Front

An anomaly in data is:

Back

A deviation from the norm

Front

Central tendency is defined as:

Back

The measure of the center of a data set

Front

A chi-squared test is used for:

Back

Testing the independence (difference) of two linked data sets (that can be put into categories)

Front

Correlation is a statistical measure that indicates the strength of the relationship between two variables.

Back

True

Front

A critical value in statistical tests is:

Back

a threshold to determine significance

Front

What does degrees of freedom represent in statistical tests?

Back

The number of independent values or quantities which can be assigned to a statistical distribution

Front

What is a dependent variable?

Back

A variable that is measured in a study and which you expect to respond to changes in another variable.

Front

Dispersion in the context of a data set is defined as:

Back

The spread of the data points around the mean value.

Front

What does distribution refer to in data analysis?

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The spread of data points

Front

Explain expected frequency.

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Expected frequency is the results that you would expect to get based on some theoretical assumptions (the average).